Screw and rivet-lock cinch binder



Sept. 18, 1934. G, R. ANDERSON vSCREW AND RIVET LOCK CINCH BINDER Original Filed Deo. 14, 1931 INVENTOR G6013@ R. n ders 012 Patented Sept. 18, 1934 PATENT OFFICE SCREW AND RIvE'r-LooK clNoHiBINDER George R. AndersonpSanta Rosa, Calif., assgnor of 'one-half to E. L. Finley, 4Santa Rosa,

Callf.

' Application December, 1931, serial No. 580,824 i Renewed February 12, 1934 i 2 claims. (C1. 129-12) This invention relates toloose leaf binders and especially to large binders such as are used in municipal and government ofces of different kinds and in which valuable data, such as assessv5 ment rolls etc. are kept. In the use of such binders it is desirable that the sheets or leaves as inserted therein shall be very rmly held against being tornfrom place. It is also desirable once the binder is filled or the data for the year or 10i other scal term has been placed therein,`that the cover of the binder shall be sealed against removal so as to prevent the possible loss or substitution of any ofthe sheets."

l The principal object of' my invention'therefore 151' is to provide a binder structure by means of which the above desired ends may be obtained in a convenient and practical manner and without the use of any relatively expansive springA locks or otherdevices which are liable to get out of order 2g" and refuse to function; and with which the desired clamping pressure cannot be conveniently obtained,"'if at all; v

A further object of the invention vis to produce a simple andv inexpensive ,device and yet one 215i which will be exceedingly 'effective for the purpose for which it is designed.

These objects accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following 130'; specification and claims.

In the drawing similar characters of reference indicate corresponding parts in the several views: Fig. l is a perspective View of a binder as partly lled and before the cover is finally sealed. Fig. 2 is a full-sized fragmentary section of a binder showing the cover clamped against the sheets by the post and nut arrangement.

Fig. 3 is a perspective view of a binding nut de tached.

Fig. 4 is an enlarged fragmentary section of the binder cover, post and nut showing the iinal relation of the nut and its post when the binder is finally sealed. Y

Fig. 5 is a similar view of a modication show- 45i; ing a nut sealed against turning and removal.

Fig. 6 is a fragmentary view of a sectional form of binding post.

Fig. 7 is a side view of a modied form of binding post.

Fig. 8 is a fragmentary perspective of the lower portion of the same.

Referring now more particularly to the characters of reference on the drawing and particularly at present to Figs. 1 to 5, the numerals l and 55 2 denote the bottom and top back bars of the covers 3 and 4 respectively, which covers are `flexibly or hingedly connected to the bars as usual. The bars are preferably hollow forthe sake oflightness and rigidly secured in any suitable manner in the lower bar 1 and `projecting upwardly there-l 6.0i from at spaced intervals along the length'ofthe same are threaded posts 5.

The leaves or sheets 6 to be disposed between the covers are of course punchedrto correspond to thel size 'andspacing of the posts so as to slip 65,55 over the same. The posts are of an initial height sufficient to take care of any maximumnumber of vleaves which might be placedlin the binder.,-l

Y The :posts `project with f a running fitV only through the bottom-l Wall 'of theupper lbarand 720,-; through considerably larger holes 7 in .thetop Wallof the bar. `Thebarthere`for may be slipped onto orremoved fromthe posts at any :timefas long as the posts are clear. Toclamp theiupper barl against the adjacent leaves or sheets to hold 7.61. the latter rmly against each other and also prevent removal of the'cover, I1 providenuts Sato screw onto the posts.'V Said nuts arepreferably of circular formv and `of a diameter lsuch"that,they will-t'through the holes 4'7; ywhile their height is 891, less than the thickness of the bar between the top and bottom walls, so that the top surface of the nuts is below the upper suface of the bar when said nuts are engaged with the lower interior wall of the bar as shown in Fig. 2.

The nuts are provided with opposed slots 9 whereby they may be turned with the aid of a suitable Spanner provided for the purpose. Since the nuts are normally removable the cover may be taken off the posts whenever it is neces sary to add another sheet, and each time the cover is replaced it is clamped securely against the sheets to hold the same rmlyin place and prevent their being torn out from about the posts.

When the binder is to be finally sealed up, so that no more sheets can be added or removed, the cover is temporarily taken off and the posts sawed oi to a levelv such that when the cover is subsequently replaced and tightened down by the nuts, the tops of the posts will be below the top level of the cover bar as shown in Fig. 4. The topmost threads of the posts are then deflected or deformed outwardly by a punch or the like so that some of the metal of the threads will enter the slots 9 as shown at 10 in Fig. 4, thus preventing the nutsfrom being unscrewed.

In order to provide a positive seal against the removal of the cover and of a nature such that any attempt at tampering will be immediately de- 1g@ (which is a special one for the purpose) is under.- cut below the top as shown at 12 so that the lead will have a dove-tail t. ThefholesfTare .tlieriA preferably plugged with discs` 13 .ofthe same kind of leather or fabric with-which the 'bar 2 is bound so that a smooth and finished surface is` presented.

Nothing then projects Y`above the @topifof-fthef binder to prevent a number of binders being then disposed in close superimposed or side-b-y-side re-v lation on a shelf or in a bookcase. 'Inisomer instances -the-"relatively,y longl kposts which 'initially project' some distancesabove Vthe bindenf'would be objectionable.v- If desiredtherefore the posts' may be Vof i the sectional character asshownat 5a in Fig. .6, and of the same-general forni f ofi construction as lnow vemployed for =sectional binder posts except that-they are lthreaded fromrendto .end so that when assembled they form -a :continuousl screw. 1 y p ForA certain classes of binders in-which a denite" "numberi' ofleaves vhave `a constant ldenite depth-orlthickness ofthe bound 'matteiyI Amay-` make' the' posts 'of curvedand non-threaded form asf shown at 14.in Figsi'f? and-S.- The lower end ofleaehsuel'i'postA haszacross-headil or thelike for? holding engagement; with the 'bottom lbart-la of-Ather'cover. At--its upper endthe --post is provided with fa vertical-\1;hrea ded stud l 16 projecting. into Athe top':bar-\2a,lleavingv a shoulder at the base ofathe'stud'on which saaidbai` 'isfsupportedi The' ily seen that I have produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, stillin practice such deviations from such detail may jbe resorted to as do not forma departure from the spirit of the invention, as defined by the appended claims. v

f g Having thus described my invention what I claim as new and useful and desire to secure by Letters" Patent i is:

1. In connection with a binder structure havfing-top and-bottomcovers, threaded posts projecting upwardlyffrom the bottom cover and through the top cover, and nuts initially removable' and adjustable on the posts to clamp the top cover 'against the sheets contained between the :coversfsaid nuts having Spanner slots on top open to the bore, the method of sealing the cover against/removal when the binder'is filled consistinggin inst-removing `the nuts and top cover, cuttingoff one of the posts to a level vsuch'that it will bebelow the top of its nut when the coveris replaced:.and the nut is screwed'dowmreplacing the cover and nut, and owing an initially molten sealing material into the: cup formed between the nutand' post and into the-Spanner slots'vof-said nut to-llthe same." v .v p 2.l In a binder, top andfbottom covers, `threaded--posts mountedV in thebottom cover and extending through thetop cover andnuts for engagement with the postsr havinginitially open span-y ner slots forengagement Witha wrenchthe bore of -one of said .nuts adjacent'its upperlend being provided with a relatively large annular groove communicating withvthe-slots whereby When'the nutis screwedonto its p ostwith the top of the post below-the grooverand sealingY materialis flowed into the bore of the nut tofill the same to the top andforma-sealing plug, such material will ll the groove and slotsand: prevent removal. of theI plug and nut.v c

- GEORGE R-ANDERSON 

